20936500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3221}}^1$

素因数の和:3253

約数の個数: 48

約数和(自身を含む): 49257936

約数和(自身を除く): 28321436

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3221, 3250, 6442, 6500, 12884, 16105, 32210, 41873, 64420, 80525, 83746, 161050, 167492, 209365, 322100, 402625, 418730, 805250, 837460, 1046825, 1610500, 2093650, 4187300, 5234125, 10468250, 20936500]

約数ペア:

[(1, 20936500), (2, 10468250), (4, 5234125), (5, 4187300), (10, 2093650), (13, 1610500), (20, 1046825), (25, 837460), (26, 805250), (50, 418730), (52, 402625), (65, 322100), (100, 209365), (125, 167492), (130, 161050), (250, 83746), (260, 80525), (325, 64420), (500, 41873), (650, 32210), (1300, 16105), (1625, 12884), (3221, 6500), (3250, 6442)]